There are 2 categories of Christian Mothers:
1. Those who wish their children to get A's in schools, get high paying jobs, become famous. Thus, prayers mostly in these. Such as the mother of Zebedee's sons.
2. Those who wish their children to be the benefit of others, even if it costs them their lives for the Lord. Such as the mother of St. Augustine.
Both could pray in tears, but with different motives.